Assignee
PHILADELPHIA GEAR CORP
US·13 granted patents·217 citations·filing 1975–2005
Top patents by PatentIndex Score
13 records- 0174US4068740AGear pump assemblyPHILADELPHIA GEAR CORP·Filed 1976·Granted Jan 17, 1978·29 cites·16 claims
- 0271US4022309ADe-clutch mechanism for valve operatorPHILADELPHIA GEAR CORP·Filed 1975·Granted May 10, 1977·19 cites·5 claims
- 0368US5525269AImpeller tiplets for improving gas to liquid mass transfer efficiency in a draft tube submerged turbine mixer/aeratorPHILADELPHIA GEAR CORP·Filed 1994·Granted Jun 11, 1996·35 cites·5 claims
- 0464US4474078AValve operator de-clutch mechanismPHILADELPHIA GEAR CORP·Filed 1982·Granted Oct 2, 1984·25 cites·7 claims
- 0563US5960671AEccentric pivotable mounting for changing gear reduction ratiosPHILADELPHIA GEAR CORP·Filed 1997·Granted Oct 5, 1999·24 cites·15 claims
- 0663US4063707AValve protective mechanism for power operated valvesPHILADELPHIA GEAR CORP·Filed 1976·Granted Dec 20, 1977·19 cites·10 claims
- 0762US4280373APortable drive unit for valve actuatorPHILADELPHIA GEAR CORP·Filed 1979·Granted Jul 28, 1981·19 cites·18 claims
- 0850US4460152AHand pump with automatic lock-outPHILADELPHIA GEAR CORP·Filed 1982·Granted Jul 17, 1984·15 cites·12 claims
- 0948US4053038ASelf-synchronizing clutchPHILADELPHIA GEAR CORP·Filed 1976·Granted Oct 11, 1977·13 cites·19 claims
- 1044US7377497B2Aeration system and methodPHILADELPHIA GEAR CORP·Filed 2005·Granted May 27, 2008·0 cites·27 claims
- 1144US6464227B1Manometric fluid barrier sealPHILADELPHIA GEAR CORP·Filed 2001·Granted Oct 15, 2002·3 cites·18 claims
- 1238US4249863ASurface aerator impellerPHILADELPHIA GEAR CORP·Filed 1979·Granted Feb 10, 1981·9 cites·4 claims
- 1335US4163631ASurface aerator impellerPHILADELPHIA GEAR CORP·Filed 1977·Granted Aug 7, 1979·7 cites·6 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →